2010 BC Guide in Determining Fitness to Drive

21.13 Commercial drivers with a loss of stereoscopic depth perception ormonocularityApplicationThese guidelines apply to driver fitness determinations for commercialdrivers who: lose stereoscopic depth perception, or become monocular.Assessment guidelines OSMV will request an ICBC road test.Fitness guidelinesOSMV determinationguidelinesConditionsRestrictionsRe-assessmentguidelinesPolicy rationaleIndividuals may drive if: they meet the fitness guidelines for visual acuity and visual field it has been at least one month since the loss of stereoscopic depthperception, and they complete a road test that indicates they are able to compensatefor their change in vision.OSMV may find individuals fit to drive if they successfully completean ICBC road test.No conditions are required.No restrictions are required.No re-assessment, other than routine commercial re-assessment, isrequired.Individuals with monocular vision can compensate for the loss ofstereoscopic depth perception by using visual cues such as the relativesize of objects and generally have adequate depth perception foreveryday activities such as driving. The Canadian OphthalmologicalSociety notes that a driver who has recently lost the sight of an eye orstereoscopic vision may require a few months to recover the ability tojudge distance accurately.For commercial drivers who lose stereoscopic depth perception afterbeing licensed, a road test is required in order to confirm that they areable to compensate for the loss.275